My grandmother suffered in her old age from macular degeneration, a common age-related eye disease that causes the center of your visual field (the macula) to gradually fritz out. As it affected her more and more, the font size in her emails ballooned to cartoonish sizes. She began walking with a cane, and needed a fancy electronic doo-dad to tell her when her cup of tea was full. By the end of her life, she was totally blind.
Watching my grandmother wink out from the world of seeing was tragic; the knowledge of macular degeneration's heredity terrifying. Relatives of those who have…
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